
Atomic Mass Calculation Quiz

Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard
Nancy Jackson
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'naturally occurring' mean in the context of isotopes?
Isotopes that are radioactive
Isotopes that are synthesized in the lab
Isotopes that have a short half-life
Isotopes that exist naturally without human intervention
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which magnesium isotope has the highest abundance?
Magnesium-25
Magnesium-26
Magnesium-27
Magnesium-24
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you set up the calculation for average atomic mass?
Subtract the lightest isotope mass from the heaviest
Divide the total mass by the number of isotopes
Add all isotope masses together
Multiply each isotope mass by its abundance and sum the results
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of using PEMDAS in atomic mass calculations?
It helps in identifying the most abundant isotope
It is used to convert masses to percentages
It ensures the correct order of operations in calculations
It helps in organizing the isotopes
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the abundance of the second isotope if only one is given?
Multiply the given abundance by two
Assume it is the same as the first isotope
Subtract the given abundance from 100%
Divide the given abundance by two
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the average atomic mass of boron if Boron-10 has 20% abundance?
10.8 amu
10.0 amu
11.2 amu
11.0 amu
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to check the final answer against the original isotope masses?
To confirm the isotopes are stable
To verify the isotopes are correctly identified
To ensure the answer is within the range of given masses
To check if the isotopes are naturally occurring
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